Add help message and man entry for --write-journal

Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.com>

diff --git a/ReadMe.c b/ReadMe.c
index 10921e3bd74e1a87c8495b6a5b9c2d8b99f2858b..fb5a671153531c7810dd5ff2ee9825e8fd45c679 100644 (file)
--- a/ReadMe.c
+++ b/ReadMe.c
@@ -376,6 +376,7 @@ char Help_create[] =
 "  --name=       -N   : Textual name for array - max 32 characters\n"
 "  --bitmap-chunk=    : bitmap chunksize in Kilobytes.\n"
 "  --delay=      -d   : bitmap update delay in seconds.\n"
+"  --write-journal=   : Specify journal device for RAID-4/5/6 array\n"
 "\n"
 ;
 

diff --git a/mdadm.8.in b/mdadm.8.in
index bf3e131159644fa64f428932b4308def14d2f36c..2844039584ac8ba5bf761e34ad0c8baf6b4f14e0 100644 (file)
--- a/mdadm.8.in
+++ b/mdadm.8.in
@@ -990,6 +990,12 @@ Only works when the array is for clustered environment. It specifies
 the maximum number of nodes in the cluster that will use this device
 simultaneously. If not specified, this defaults to 4.
 
+.TP
+.BR \-\-write-journal
+Specify journal device for the RAID-4/5/6 array. The journal device
+should be a SSD with reasonable lifetime.
+
+
 .SH For assemble:
 
 .TP